/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.general.dubbo.provider;

import com.general.dubbo.api.DemoService;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import org.apache.dubbo.config.ApplicationConfig;
import org.apache.dubbo.config.RegistryConfig;
import org.apache.dubbo.config.ServiceConfig;
import org.apache.dubbo.config.bootstrap.DubboBootstrap;

public class ProviderApplication {
    public static void main(String[] args) throws Exception {
        if (isClassic(args)) {
            startWithExport();
        } else {
            startWithBootstrap();
        }
    }

    private static boolean isClassic(String[] args) {
        return args.length > 0 && "classic".equalsIgnoreCase(args[0]);
    }

    private static void startWithBootstrap() {
        ServiceConfig<DemoServiceImpl> service = new ServiceConfig<>();
        service.setInterface(DemoService.class);
        service.setRef(new DemoServiceImpl());
        service.setFilter("bulkhead");
        putBulkheadParameter(service);

        DubboBootstrap bootstrap = DubboBootstrap.getInstance();
        bootstrap.application(new ApplicationConfig("dubbo-demo-api-provider"))
                .registry(new RegistryConfig("zookeeper://127.0.0.1:2181"))
                .service(service)
                .start()
                .await();
    }

    private static void startWithExport() throws InterruptedException {
        ServiceConfig<DemoServiceImpl> service = new ServiceConfig<>();
        service.setInterface(DemoService.class);
        service.setRef(new DemoServiceImpl());
        service.setFilter("bulkhead");
        service.setApplication(new ApplicationConfig("dubbo-demo-api-provider"));
        service.setRegistry(new RegistryConfig("zookeeper://127.0.0.1:2181"));
        putBulkheadParameter(service);
        service.export();

        System.out.println("dubbo service started");
        new CountDownLatch(1).await();
    }

    /**
     * 将bulkhead相关的参数传入url的参数中
     * @param serviceConfig
     */
    private static void putBulkheadParameter(ServiceConfig serviceConfig){
        Map<String, String> map = new HashMap<>();
        // semaphore模式
//        map.put("bulkhead", "semaphore");
//        map.put("maxConcurrentCalls", "1");
//        map.put("maxWaitDuration", "2");

        // threadPool模式
        map.put("bulkhead", "threadPool");
        map.put("maxThreadPoolSize", "5");
        map.put("coreThreadPoolSize", "5");
        serviceConfig.setParameters(map);
    }
}
